Sanitary hair drier



June 3, 1930. 1 MAZADE SANITARY HAIR DRIER Film1v oct. 21. 1927 1N VEN T012. 300:55 M QZADE A 7`TORNY y Patented June 3, 1930 UNITED STATES PATENT OFFICE SANITARY HAIR DBIER Application-tiled Dctober 21, 1927. SerialA No. 227,684.

'My invention relates to sanitary hair driers and more particularly to a hood type of hair drier, and the obiects of my invention arez.

First, to provide a safe and sanitary hair drier adapted to be placed over the head of the customer insuitable spaced relation therewith; second, to provide a hair drier of this class in which the air is conducted to and p distributed substantially equally over the hair to be dried; third, to provide a device 'of this class lwhich causes/the temperature of the air to be substantially constant at all points; fourth, to provide a device of this class which is practically universal in its application and in which no adjustment whatever is required; fifth, to provide a device of this class which is extremely economical in operation, the quantity of airA rquired being held to the minimum r uirement, and sixth,

toprovide a device of thls class which is relatively rugged in construction, which is simple to manipulate, economical of manufacture and which will not readily deteriorate or get out of order.

With these and other objects in View as will appear hereinafter, my invention relates to certain novelfeatures of construction, combination and arrangement of parts and portions as will be hereinafter described in detail 3Q and particularly set forth in the appended claims, reference being had to the accom panying drawing and to the characters of reference thereon which form a part of this application, in which:

Figure 1 showsmy hood applied over the head of a person; Fig. 2 isalongitudinal sec'- tional view taken along the line 2--2 of Fig. 3 showing the perforated hood member and the surrounding casing; Fig. 3 isa cross sectionalfview in plan taken along'the line 3 3 of'Fig. 2, and Fig. 4 is a fragmentary enlargedsectional view of the lobe portion of the hood taken along the line 4--4 of Fig. 2.

Similar characters of reference refer to similar parts and portions throughout the several views of the drawings.v 4

The hood member 1, 'outer casing 2, lobe portion 3, perforations 4, and air conductor 5,

constitute the principal parts and ortions of my hair drier. My hood comprises prmarily two concentrically positioned semispherical members 1 and 2, the inner member l being provided with a' plurality of spaced apart perforations, while the outer member 2 forms a solid casing entirely surrounding 55 the outer surface of the inner member 1 and provided with a comparatively large air inlet 2 which is preferably positioned in the vicinity of the top of the member 2. The hood'l andcasing 2 are made preferably of m)v sheet metal being spun or otherwise formed into ,the semi-spherical shape illustrated. They are provided with downwardly extending lobe portions 3, said lobe portions being positioned at the. point of greatest diameter and are made of sufficient width and length to extend Well to either side and belowthe ear of a person over whom the hood is placed. A suitable air conductorl 5 is secured to the member 2 by means of the flanges 5* or in any 70 other desirable manner and communicate with the source of air supply not shown in the drawingv The inner member or hood 1 ismade of sufficientI diameter to allow a considerable space between the head of a person and the inner surface of the hood when it isv placed over the head so that a free circulation of the air around the head is insured. The outer'member or casing 2 is somewhat larger in diameter than the hood memberl thereby '30 providing aA suitable air space over all points of the hood. As indicated. in Fig. 2, I provide the hood with an outwardly extending annular flange and the easing with an' in wardly extending annular flange, the hood and casing being assembled in such a manner that the vhood flange restsl upon the casing flange and is secured thereto y any suitable means. The juncture ofthe flanges forms the only connection .between the hood and the outer casing at .the same time forming a seal for the space between the hood and the casing, the flanges extending around the lobe portionssof the hood and 'casing as well as around thecircular portions thereof. This feature is indicated in Fig. 4.

In order to effect a substantially equal distribution of the air to all parts of thehead enveloped by the hood I preferably graduate the size of the perforatons in the hood. As

indicated in Fig. 2, these perforations center on substantially equi-distant circles around the hood, the number of perforations in each circle being ap roximately proportional to the diameter o the circle. The size of the perforations which are in close proximity to the air inlet 2 is made relatively small whereasv the size of the perforations more remote from the inlet 2'* are larger. While the area of the perforations more remote from the inlet 2'L is greater than that of the perforations close to said inlet 'the pressure will be considerably less at the point more remote from the inlet and therefore the quantity of air passing through the larger openings will be approximately equal to that 1passing through the smaller openings and t us a falrl equal distribution of the air will be obtalned. The outer surface of the casing 2 ma be highly polished, the latter therefore ra iating very little heat, consequently the temperature of the air at all points within the casing will 'remain practically uniform. In passing through the perforations in the hood the air is directed substantially radially and impinges on the enclosed head at a great many points. No air whatever is wasted as every stream of air comes into contact with the head. This results in a quick, thorough and uniform drying of the hair and. as a. uniform temperature of the air exists the maximum comfort of the person whose hair is being dried is insured.

Though I have shown and described a particular construction, combination and arran ment of parts and portions, I do not wis to be limited to this palticular construction, combination and arrangement but desire to include in the scope of my invention the construction, combination and arrange# ment substantially as set 4forth in the appended claims.

Having thus I claim as new and desire to secure by Letters Patent is:

1. In a hair drier, a substantially semispherical hood, a plurality of substantially equally distributed perforations in said hood the area of said rforations being graded from a comparatlvely small area near the apex of said hood,lto a substantially greater area near the lower margin thereof, an outer casing surrounding said hood in spaced relation and securedto the lower margin thereof, and an air inlet 1n said outer casing positioned near the apex of said hood.

2. In a hair drierfan inner semi-spherical hood with extensions to cover the ears, an outer semi-spherical casing-surroundin said hood in spaced relation thenewith with similar extensions, themargins of said hood"and casi bein joined by an annular ring, an air i et adpcent the apex of said hood in the outer casing and a plurality of perforations said hood, the area of said perforationaA 1n described my invention, whaty pro rtion to the unit hood area increasing as t e distance from said air inlet increases.

3. In a hair drier, a substantially semispherical casing, a pair of oppositely disosed lobe portions extending downwardly rom the margin of said casing, an inwardly extending flange extending around the margins of said easing, an inner, semi-spherical lioodhaving complementary 4lobe portions and an outwardly extending flange around the margin of said hood and lobe portions, means for securing said flanges in overlapping relation and supporting said hood in substantially parallel, spaced relation within said casing, an air inlet near the apex of said casing, a plurality of perforations in said hood and the lobe portions thereof, the area of said perforations in proportion to the unit hood area increasing from a small value near 4said air inlet to a large value at the margins of said hoo In testimon whereof, I have hereunto set my hand at an Diego, California, this l1 day of October, 1927.

LOUIS MAZADE. 

